Datasheet

LM2591HV
SNVS074D –MAY 2001–REVISED APRIL 2013 www.ti.com
ELECTRICAL CHARACTERISTICS ALL OUTPUT VOLTAGE VERSIONS (continued)
Specifications with standard type face are for T
J
= 25°C, and those with boldface type apply over full Operating
Temperature Range. Unless otherwise specified, V
IN
= 12V for the 3.3V, 5V, and Adjustable version. I
LOAD
= 500 mA
Symbol Parameter Conditions LM2591HV-XX Units
(Limits)
Typ
(1)
Limit
(2)
DC Max Duty Cycle (ON) See
(5)(6)
100
%
Min Duty Cycle (OFF) 0
I
CLIM
Switch current Limit Peak Current,
(4)(5)
1.9 A
1.3/1.2 A(min)
2.8/3.0 A(max)
I
L
Output Leakage Current Output = 0V 50 μA(max)
Output = −1V
(4)(6)(7)
5 mA
30 mA(max)
I
Q
Operating Quiescent SD /SS Pin Open
(6)
5 mA
Current 10 mA(max)
I
STBY
Standby Quiescent SD /SS pin = 0V
(7)
90 μA
Current 200/250 μA(max)
θ
JC
Thermal Resistance TO220 or TO263 Package, Junction to Case 2 °C/W
θ
JA
TO220 Package, Junction to Ambient
(8)
50 °C/W
θ
JA
TO263 Package, Junction to Ambient
(9)
50 °C/W
θ
JA
TO263 Package, Junction to Ambient
(10)
30 °C/W
θ
JA
TO263 Package, Junction to Ambient
(11)
20 °C/W
ON/OFF CONTROL Test Circuit Test Circuit and Layout Guidelines
ON /OFF Pin Logic Input 1.3 V
V
IH
Threshold Voltage Low (Regulator ON) 0.6 V(max)
V
IL
High (Regulator OFF) 2.0 V(min)
I
H
ON /OFF Pin Input Current V
LOGIC
= 2.5V (Regulator OFF) 5 μA
15 μA(max)
I
L
V
LOGIC
= 0.5V (Regulator ON) 0.02 μA
5 μA(max)
(6) Feedback pin removed from output and connected to 12V for the 3.3V, 5V, and the ADJ. version to force the output transistor switch
OFF.
(7) V
IN
= 60V.
(8) Junction to ambient thermal resistance (no external heat sink) for the package mounted TO-220 package mounted vertically, with the
leads soldered to a printed circuit board with (1 oz.) copper area of approximately 1 in
2
.
(9) Junction to ambient thermal resistance with the TO-263 package tab soldered to a single sided printed circuit board with 0.5 in
2
of (1
oz.) copper area.
(10) Junction to ambient thermal resistance with the TO-263 package tab soldered to a single sided printed circuit board with 2.5 in
2
of (1
oz.) copper area.
(11) Junction to ambient thermal resistance with the TO-263 package tab soldered to a double sided printed circuit board with 3 in
2
of (1 oz.)
copper area on the LM2591HVS side of the board, and approximately 16 in
2
of copper on the other side of the p-c board. See
APPLICATION INFORMATION in this data sheet and the thermal model in Switchers Made Simple available at
http://www.ti.com/lsds/ti/analog/powermanagement/power_portal.page.
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